Is there a way to almost guarantee 100 people that aren't other game developers actually know your game exists?

I would say you could spend a certain amount money and you would guarantee that 100 gamers look at your game and consider buying it, or at least wish listing it. But assuming your game looks good, and has something about its gameplay that seems unique and interesting, is there a way to, for free, almost guarantee 100 people see your game, like a trailer, or a piece of media, to at least consider wishlisting it on steam?